CVE-2026-76784 json
Insufficient Cryptographic Protections in Local Device Communication Protocol on Multiple TP-Link Kasa Smart Home Devices
published 2026-08-26 2 mo ago modified 2026-08-28 2 mo ago also EUVD-2026-66641
- cvss
- 8.7
- version 4.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 9%
- public exploits
- 0
- none known
Summary
Multiple TP-Link Kasa smart home devices contain insufficient cryptographic protections in the local device communication protocol. An adjacent network attacker may intercept, replay or forge locally exchanged control messages, potentially resulting in unauthorized device control.
Successful exploitation could allow an attacker to manipulate the operational state of an affected device, resulting in unauthorized state changes, disruption of normal device functionality or a denial-of-service condition.
Patch / fix
- TP-Link Systems Inc. HS103P3 / HS103P4 v5 1.1.3 Build 250908 Rel.112508
- TP-Link Systems Inc. EP10 1.1.1 Build 250908 Rel.112508
- TP-Link Systems Inc. EP25 V2 1.0.3 Build 240529 Rel.145252
- TP-Link Systems Inc. HS300 V2 1.1.2 Build 241220 Rel.171333
- TP-Link Systems Inc. KP303 V2 1.1.2 Build 241220 Rel.173321
- TP-Link Systems Inc. EP40A 1.1.1 Build 250908 Rel.112526
- TP-Link Systems Inc. KP125MP2 / KP125MP4 1.2.5 Build 241213 Rel.172504
- TP-Link Systems Inc. KP115 1.1.1 Build 250908 Rel.112945
- TP-Link Systems Inc. KS225 1.1.1 Build 240626 Rel.175125
- TP-Link Systems Inc. EP40M 1.1.0 Build 240415 Rel.171219
- TP-Link Systems Inc. KS205 1.1.1 Build 240724 Rel.105920
- TP-Link Systems Inc. KS240 1.0.6 Build 240122 Rel.160100
- TP-Link Systems Inc. ES20M 1.1.6 Build 250522 Rel.210254
- TP-Link Systems Inc. KS220M 1.1.6 Build 250522 Rel.210254
- TP-Link Systems Inc. KP200 V3 1.1.0 Build 250225 Rel.171724
- TP-Link Systems Inc. HS200 V5.26 1.0.3 Build 240723 Rel.192622
- TP-Link Systems Inc. HS220-LA(US) 6.6 / HS220-BL(US) 6.6 1.0.3 Build 240723 Rel.192630
- TP-Link Systems Inc. HS220 V3.26 1.1.1 Build 240802 Rel.094131
- TP-Link Systems Inc. HS220-LA(US) 4.6 / HS220-BL(US) 4.6 1.1.1 Build 240802 Rel.094142
- TP-Link Systems Inc. KL125 1.1.1 Build 260710 Rel.082646
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 2 mo ago
Exploit prediction
0.20% chance of exploitation in the next 30 days, higher than 9% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 8.7 | CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| CNA | 4.0 | 8.7 | CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected products
- TP-Link Systems Inc. HS103P3 / HS103P4 v5
- TP-Link Systems Inc. EP10
- TP-Link Systems Inc. EP25 V2
- TP-Link Systems Inc. HS300 V2
- TP-Link Systems Inc. KP303 V2
- TP-Link Systems Inc. EP40A
- TP-Link Systems Inc. KP125MP2 / KP125MP4
- TP-Link Systems Inc. KP115
- TP-Link Systems Inc. KS225
- TP-Link Systems Inc. EP40M
- TP-Link Systems Inc. KS205
- TP-Link Systems Inc. KS240
- TP-Link Systems Inc. ES20M
- TP-Link Systems Inc. KS220M
- TP-Link Systems Inc. KP200 V3
- TP-Link Systems Inc. HS200 V5.26
- TP-Link Systems Inc. HS220-LA(US) 6.6 / HS220-BL(US) 6.6
- TP-Link Systems Inc. HS220 V3.26
- TP-Link Systems Inc. HS220-LA(US) 4.6 / HS220-BL(US) 4.6
- TP-Link Systems Inc. KL125
Classification
- Weakness
-
- CWE-325 Missing Cryptographic Step
References
-
tp-link.com
/us/support/download/
patch
-
tp-link.com
/en/support/download/
patch
-
tp-link.com
/in/support/download/
patch
-
tp-link.com
/us/support/faq/5267/
vendor-advisory
Sources
- CVE List CVE-2026-76784
- NVD CVE-2026-76784
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.